EP 1247330 A1 20021009 - SHAFT VOLTAGE AND CURRENT MONITORING SYSTEM
Title (en)
SHAFT VOLTAGE AND CURRENT MONITORING SYSTEM
Title (de)
WELLENSPANNUNGS- UND STROM ÜBERWACHUNGSSYSTEM
Title (fr)
SYSTEME DE CONTROLE DE TENSION ET DE COURANT D'ARBRE
Publication
Application
Priority
- US 0012319 W 20000504
- US 13278299 P 19990506
- US 13376299 P 19990512
- US 56381900 A 20000503
Abstract (en)
[origin: WO0069062A1] A rotating machinery monitor provides a warning that is indicative of a developing problem with the rotating machinery (502). The rotating machinery monitor has at least one current sensor (510) for detecting shaft grounding current in the rotating machinery, at least one voltage sensor (508) for detecting shaft voltage in the rotating machinery (502), a change detector (602) for determining rate of change in the shaft grounding current and a change detector (604) for determining rate of change in the shaft voltage, and an evaluation system (518) for producing a warning (526) as a function of the change in the shaft grounding current, the rate of change in the shaft voltage, the shaft grounding current and the shaft voltage.
IPC 1-7
IPC 8 full level
G01R 31/34 (2006.01); G05B 23/02 (2006.01); H02K 5/16 (2006.01); H02K 11/00 (2006.01)
CPC (source: EP US)
G01R 31/343 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0069062 A1 20001116; AU 4822600 A 20001121; CA 2380280 A1 20001116; CA 2380280 C 20060103; EP 1247330 A1 20021009; EP 1247330 A4 20040317; JP 2003525002 A 20030819; JP 4381612 B2 20091209; US 6460013 B1 20021001
DOCDB simple family (application)
US 0012319 W 20000504; AU 4822600 A 20000504; CA 2380280 A 20000504; EP 00930399 A 20000504; JP 2000617547 A 20000504; US 56381900 A 20000503